package com.example.demo.service;

import com.example.demo.model.User;

public interface IUserService {

    void insertUser(String username,String password);

    User selectUserByName(String username);

    User selectUserById(Long userId);
    boolean login(String username,String password);

    void updateWinnerUserById(Long userId);
    void updateLoserUserById(Long userId);
}
